Datasheet

LM2593HV-ADJ
Electrical Characteristics
(Continued)
Specifications with standard type face are for T
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol Parameter Conditions LM2593HV-ADJ Units
(Limits)
Typ Limit
(Note 4) (Note 5)
η Efficiency V
IN
= 12V, V
OUT
= 3V, I
LOAD
=2A 75 %
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range. Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version. I
LOAD
= 500 mA
Symbol Parameter Conditions LM2593HV-XX Units
(Limits)
Typ Limit
(Note 4) (Note 5)
DEVICE PARAMETERS
I
b
Feedback Bias Current Adjustable Version Only, V
FB
= 1.3V 10 nA
50/100 nA (max)
f
O
Oscillator Frequency (Note 7) 150 kHz
127/110 kHz(min)
173/173 kHz(max)
V
SAT
Saturation Voltage I
OUT
= 2A (Note 8) (Note 9) 1.10 V
1.3/1.4 V(max)
DC Max Duty Cycle (ON) (Note 9) 100 %
Min Duty Cycle (OFF) (Note 10) 0
I
CLIM
Switch current Limit Peak Current, (Note 8) (Note 9) 3.0 A
2.4/2.3 A(min)
3.7/4.0 A(max)
I
L
Output Leakage Current (Note 8) (Note 10) (Note 11) Output = 0V 50 µA(max)
Output = −1V 5 mA
30 mA(max)
I
Q
Operating Quiescent SD /SS Pin Open (Note 10) 5mA
Current 10 mA(max)
I
STBY
Standby Quiescent SD /SS pin = 0V (Note 11) 90 µA
Current 200/250 µA(max)
θ
JC
Thermal Resistance TO220 or TO263 Package, Junction to Case 2 ˚C/W
θ
JA
TO220 Package, Juncton to Ambient (Note 12) 50 ˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 13) 50 ˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 14) 30 ˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 15) 20 ˚C/W
SHUTDOWN/SOFT-START CONTROL Test Circuit of
Figure 1
V
SD
Shutdown Threshold 1.3 V
Voltage Low, (Shutdown Mode) 0.6 V(max)
High, (Soft-start Mode) 2 V(min)
V
SS
Soft-start Voltage V
OUT
= 20% of Nominal Output Voltage 2 V
V
OUT
= 100% of Nominal Output Voltage 3
I
SD
Shutdown Current V
SHUTDOWN
= 0.5V 5µA
10 µA(max)
I
SS
Soft-start Current V
Soft-start
= 2.5V 1.5 µA
5 µA(max)
LM2593HV
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